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Sierra Maestra

(Encyclopedia)Sierra Maestra syāˈrä mäāˈsträ [key], rugged mountain range, SE Cuba, rising abruptly from the coast. Consisting of connecting ranges with local names, the Sierra Maestra is the highest system ...

tellurium

(Encyclopedia)tellurium tĕlo͝orˈēəm [key] [Lat.,=earth], semimetallic chemical element; symbol Te; at. no. 52; at. wt. 127.60; m.p. 450℃; b.p. 990℃; sp. gr. 6.24 at 20℃; valence −2, +4, or +6. Telluriu...

ductility

(Encyclopedia)ductility, ability of a metal to plastically deform without breaking or fracturing, with the cohesion between the molecules remaining sufficient to hold them together (see adhesion and cohesion). Duct...

Mersin

(Encyclopedia)Mersin ēchĕlˈ [key], city (1990 pop. 420,750), capital of Içel prov., S Turkey, on the Mediterranean Sea. A rail terminus and modern seaport, it exports cotton, petroleum products, chrome, copper,...

Naugatuck, city, United States

(Encyclopedia)Naugatuck nôgˈətŭkˌ [key], industrial borough (1990 pop. 30,625), New Haven co., SW Conn., on both sides of the Naugatuck River; settled 1704, inc. 1844. In 1843, Charles Goodyear established the...

magnalium

(Encyclopedia)magnalium măgnāˈlēəm [key], alloy of aluminum and about 5% magnesium. Although weak and soft in the elemental state, magnesium alloys with aluminum, manganese, zinc, tin, zirconium, and cerium to...

León, city, Mexico

(Encyclopedia)León, city (1990 pop. 758,270), Guanajuato state, central Mexico. It is located in a fertile river valley c.5,600 ft (1,700 m) high, but with a mild, temperate climate. Frequent floods, which in 1888...

Beja

(Encyclopedia)Beja bāˈzhə [key], town, S Portugal, capital of Beja dist. and Baixo Alentejo. It is an im...

type metal

(Encyclopedia)type metal, alloy of lead with antimony, tin, and sometimes copper, so named because of its one time extensive use for making printing type. Expanding upon solidification, the alloy takes a fine and c...

bluestone

(Encyclopedia)bluestone, common name for the blue, crystalline heptahydrate of cupric sulfate called chalcanthite, a minor ore of copper. It also refers to a fine-grained, light to dark colored blue-gray sandstone....